NPC三电平PWM整流器直接电流控制策略研究  

Study on a Direct Current Control Strategy for NPC Three-level PWM Rectifiers

作　　者：吴宁 肖静 杨艺云 韩帅 冯玉斌 WU Ning;XIAO Jing;YANG Yiyun;HAN Shuai;FENG Yubin(Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China)

机构地区：[1]广西电网有限责任公司电力科学研究院

出　　处：《广西电力》2019年第6期41-44,63,共5页Guangxi Electric Power

基　　金：广西电网公司科技项目(GXKJXM20190309)

摘　　要：基于矢量控制原理提出一种适用于NPC三电平PWM整流器的直接电流控制策略。首先建立了NPC三电平PWM整流器的数学模型,然后结合矢量控制的原理分析,提出一种dq矢量控制策略,最后在MATLAB/Simulink仿真软件中搭建仿真实验平台对策略的有效性进行验证。研究结果表明,该控制策略不仅可以实现有功、无功电流的独立控制,而且直流侧电压控制稳定,系统运行良好。A direct current control strategy for NPC three-level PWM rectifiers based on the vector control principle is proposed. Firstly, a mathematical model of NPC three-level PWM rectifiers is built. Then, a dq vector control strategy is proposed combined with the principle analysis of the vector control. Finally, a simulation platform is built in MATLAB/Simulink simulation software to verify the effectiveness of the strategy. The study results show that the control strategy can realize not only the independent control of active and reactive currents but also the stable control of DC side voltage, ensuring a satisfactory performance of the system.

关 键 词：中点箝位型(NPC)整流器 三电平 直流电流 矢量控制 仿真实验 

分 类 号：TM461[电气工程—电器]